The Lone Ranger and the Lost City of Gold (1958)

The territorial governor asks the Lone Ranger to investigate mysterious raids on settlers by Indians who ride with saddles. Wealthy rancher Reese Kilgore wants to mine silver on Spirit Mountain which is sacred to the Indians.

Two outlaws, The Lonely Rider and the Indian Tonto, have caught (at least they think they have) Speedy Gonzales, a ruthless gunfighter from the town of Njietponimaistadi. They start to travel to another town for the reward, through the desert without water and fighting against Indians. And just to find out that they have made a full circle back to origin.

In 1865, Captain Mark Smith of the Confederate Army leads a band of deserters to conquer Texas and rule it as a dictator. In one of his first actions, he captures and assumes the identity of Texas' new Finance Commissioner, Colonel Marcus Jeffries, after having the real man murdered. When a contingent of Texas Rangers enters the territory, Snead, one of Smith's men, leads them into an ambush by Smith's "troopers". The Rangers are apparently wiped out, although one injured survivor is left. The survivor, nursed back to health by Tonto, swears to avenge the massacre and defeat "Colonel Jeffries" and his men.

When the young Texas Ranger, John Reid, is the sole survivor of an ambush arranged by the militaristic outlaw leader, Butch Cavendich, he is rescued by an old childhood Comanche friend, Tonto. When he recovers from his wounds, he dedicates his life to fighting the evil that Cavendich represents. To this end, John Reid becomes the great masked western hero, The Lone Ranger. With the help of Tonto, the pair go to rescue President Grant when Cavendich takes him hostage.

The Texas Rangers chase down a gang of outlaws led by Butch Cavendish, but the gang ambushes the Rangers, seemingly killing them all. One survivor is found, however, by an American Indian named Tonto, who nurses him back to health. The Ranger, donning a mask and riding a white stallion named Silver, teams up with Tonto to bring the unscrupulous gang and others of that ilk to justice.

Homesteaders are moving into the valley settled many years ago by rancher Craig Dolan. He wants to keep them out by legal means but his nephew Bart brings in outlaws to drive them out. The Lone Ranger is on hand to help the homesteaders battle Bart's men as he overcomes traps, ambushes, burning buildings and other obstacles in his attempt to bring peace to the valley.

Edited version of the 1938 Republic serial "The Lone Ranger."

A group of Texas Rangers chasing the Butch Cavendish gang is massacred in an ambush. One of the Rangers survives and becomes a vigilante, a masked Lone Ranger who, aided by his native friend Tonto, promises to bring all outlaws to justice.